docs: def get_token():
      """
      Get the encrypted GitHub token in Travis.
  
      Make sure the contents this variable do not leak. The ``run()`` function
      will remove this from the output, so always use it.
      """
      token = os.environ.get("GH_TOKEN", None)
      if not token:
          token = "GH_TOKEN environment variable not set"
      token = token.encode('utf-8')
      return token